en.wikipedia.org/wiki/Proof_that_π_is_irrational

In the 18th century, Johann Heinrich Lambert proved that the number π (pi) is
irrational: that is, ... Then Lambert proved that if x is non-zero and rational then
this expression must be irrati...

www.quora.com/If-22-7-is-rational-why-is-pi-irrational

Because 22 7 isn't pi. The definition of an irrational number is that it cannot be
expressed as a ...

socratic.org/questions/is-pi-a-rational-irrational-number-natural-whole-or-integer

Jun 30, 2015 ... pi is an irrational number Rational numbers are all numbers expressible as p/q
for some integers p and q with q != 0. pi is not expressible as p/q ...

math.stackexchange.com/questions/1547181/22-7-is-a-rational-number-and-π-is-irrational-number

Nov 26, 2015 ... Why (22/7) is a rational number and (π) is irrational number. please explain. Edit:
How can you say that 22 / 7 = π , when one number if rational ...

mindyourdecisions.com/blog/2013/11/08/proving-pi-is-irrational-a-step-by-step-guide-to-a-simple-proof/

Nov 8, 2013 ... You might remember the terms rational and irrational numbers from math class.
As a refresher, numbers like 3, 0.5, 0.333…., -10, -1/2, or 1/7 ...

factmyth.com/factoids/pi-is-an-irrational-number/

Mar 27, 2016 ... Pi (π) is an irrational number, meaning it represents a real number with a ... Both
rational and irrational numbers are infinite in that they “can't be ...

www.reference.com/math/pi-real-number-fcbfde230ea55ad2

Pi is a real number, as all numbers that exist on a number line are real. Real
numbers include all rational and irrational numbers; pi is defined as an irrational..
.

mathforum.org/library/drmath/view/76304.html

Therefore, it's irrational. Note that from here, you can say that since the square
root of any irrational number is still irrational, pi itself is also ...

mathforum.org/dr.math/faq/faq.integers.html

What's the difference between a rational number and an irrational number? ...
and -3030 are integers, but numbers like 1/2, 4.00032, 2.5, Pi, and -9.90 are not.

webonastick.com/pi/

Aug 31, 2014 ... We will prove that pi is, in fact, a rational number, by induction on the number ...
without loss of generality, does not make an irrational number.